Improved overall structure

material/assets/manifest.json

@@ -1,6 +1,6 @@
 {
-  "assets/javascripts/bundle.js": "assets/javascripts/bundle.02fd1bf7.min.js",
-  "assets/javascripts/bundle.js.map": "assets/javascripts/bundle.02fd1bf7.min.js.map",
+  "assets/javascripts/bundle.js": "assets/javascripts/bundle.4cda9c77.min.js",
+  "assets/javascripts/bundle.js.map": "assets/javascripts/bundle.4cda9c77.min.js.map",
   "assets/javascripts/worker/search.js": "assets/javascripts/worker/search.926ffd9e.min.js",
   "assets/javascripts/worker/search.js.map": "assets/javascripts/worker/search.926ffd9e.min.js.map",
   "assets/stylesheets/app-palette.scss": "assets/stylesheets/app-palette.3f90c815.min.css",

material/base.html

@@ -190,7 +190,7 @@
       {% endblock %}
     </div>
     {% block scripts %}
-      <script src="{{ 'assets/javascripts/bundle.02fd1bf7.min.js' | url }}"></script>
+      <script src="{{ 'assets/javascripts/bundle.4cda9c77.min.js' | url }}"></script>
       <script id="__lang" type="application/json">
         {%- set translations = {} -%}
         {%- for key in [

src/assets/javascripts/components/header/title/index.ts

@@ -20,9 +20,9 @@
  * IN THE SOFTWARE.
  */
 
-import { NEVER, Observable, OperatorFunction, pipe } from "rxjs"
+import { Observable, OperatorFunction, pipe } from "rxjs"
 import {
-  catchError,
+  filter,
   map,
   shareReplay,
   switchMap
@@ -31,7 +31,7 @@ import {
 import {
   Header,
   Viewport,
-  getElementOrThrow,
+  getElement,
   paintHeaderTitle,
   watchViewportAt
 } from "observables"
@@ -67,15 +67,15 @@ export function mountHeaderTitle(
   return pipe(
     switchMap(el => useComponent("main")
       .pipe(
-        map(main => getElementOrThrow("h1, h2, h3, h4, h5, h6", main)),
-        switchMap(headline => watchViewportAt(headline, { header$, viewport$ })
+        map(main => getElement("h1, h2, h3, h4, h5, h6", main)!),
+        filter(hx => typeof hx !== "undefined"),
+        switchMap(hx => watchViewportAt(hx, { header$, viewport$ })
           .pipe(
-            map(({ offset: { y } }) => y >= headline.offsetHeight),
+            map(({ offset: { y } }) => y >= hx.offsetHeight),
             paintHeaderTitle(el)
           )
         ),
-        shareReplay(1),
-        catchError(() => NEVER)
+        shareReplay(1)
       )
     )
   )

src/assets/javascripts/components/search/_/index.ts

@@ -20,17 +20,11 @@
  * IN THE SOFTWARE.
  */
 
-import { OperatorFunction, combineLatest, pipe } from "rxjs"
+import { Observable, OperatorFunction, combineLatest, pipe } from "rxjs"
 import { map, shareReplay, switchMap } from "rxjs/operators"
 
 import { SearchResult } from "integrations/search"
-import { SearchQuery, WorkerHandler } from "observables"
-import { SearchMessage } from "workers"
-
-import { useComponent } from "../../_"
-import { mountSearchQuery } from "../query"
-import { mountSearchReset } from "../reset"
-import { mountSearchResult } from "../result"
+import { SearchQuery } from "observables"
 
 /* ----------------------------------------------------------------------------
  * Types
@@ -44,6 +38,19 @@ export interface Search {
   result: SearchResult[]               /* Search result list */
 }
 
+/* ----------------------------------------------------------------------------
+ * Helper types
+ * ------------------------------------------------------------------------- */
+
+/**
+ * Mount options
+ */
+interface MountOptions {
+  query$: Observable<SearchQuery>      /* Search query observable */
+  reset$: Observable<void>             /* Search reset observable */
+  result$: Observable<SearchResult[]>  /* Search result observable */
+}
+
 /* ----------------------------------------------------------------------------
  * Functions
  * ------------------------------------------------------------------------- */
@@ -51,42 +58,18 @@ export interface Search {
 /**
  * Mount search from source observable
  *
- * @param handler - Worker handler
  * @param options - Options
  *
  * @return Search observable
  */
 export function mountSearch(
-  handler: WorkerHandler<SearchMessage>
+  { query$, reset$, result$ }: MountOptions
 ): OperatorFunction<HTMLElement, Search> {
   return pipe(
-    switchMap(() => {
-
-      /* Mount search query */
-      const query$ = useComponent<HTMLInputElement>("search-query")
-        .pipe(
-          mountSearchQuery(handler),
-          shareReplay(1)
-        )
-
-      /* Mount search reset */
-      const reset$ = useComponent("search-reset")
-        .pipe(
-          mountSearchReset()
-        )
-
-      /* Mount search result */
-      const result$ = useComponent("search-result")
-        .pipe(
-          mountSearchResult(handler, { query$ })
-        )
-
-      /* Combine into a single hot observable */
-      return combineLatest([query$, result$, reset$])
+    switchMap(() => combineLatest([query$, result$, reset$])
       .pipe(
         map(([query, result]) => ({ query, result })),
         shareReplay(1)
-        )
-    })
+      ))
   )
 }

src/assets/javascripts/components/search/query/index.ts

@@ -41,6 +41,17 @@ import {
   SearchQueryMessage
 } from "workers"
 
+/* ----------------------------------------------------------------------------
+ * Helper types
+ * ------------------------------------------------------------------------- */
+
+/**
+ * Mount options
+ */
+interface MountOptions {
+  transform?(value: string): string    /* Transformation function */
+}
+
 /* ----------------------------------------------------------------------------
  * Functions
  * ------------------------------------------------------------------------- */
@@ -49,16 +60,17 @@ import {
  * Mount search query from source observable
  *
  * @param handler - Worker handler
+ * @param options - Options
  *
  * @return Operator function
  */
 export function mountSearchQuery(
-  { tx$ }: WorkerHandler<SearchMessage>
+  { tx$ }: WorkerHandler<SearchMessage>, options: MountOptions = {}
 ): OperatorFunction<HTMLInputElement, SearchQuery> {
   const toggle$ = useToggle("search")
   return pipe(
     switchMap(el => {
-      const query$ = watchSearchQuery(el)
+      const query$ = watchSearchQuery(el, options)
 
       /* Subscribe worker to search query */
       query$

src/assets/javascripts/index.ts

@@ -29,7 +29,6 @@ import "../stylesheets/app-palette.scss"
 import { values } from "ramda"
 import {
   merge,
-  of,
   combineLatest,
   animationFrameScheduler
 } from "rxjs"
@@ -40,7 +39,9 @@ import {
   filter,
   withLatestFrom,
   observeOn,
-  take
+  take,
+  mapTo,
+  shareReplay
 } from "rxjs/operators"
 
 import {
@@ -52,9 +53,9 @@ import {
   watchLocation,
   watchLocationHash,
   watchViewport,
-  watchKeyboard,
   watchToggleMap,
-  useToggle
+  useToggle,
+  getElement
 } from "./observables"
 import { setupSearchWorker } from "./workers"
 
@@ -69,7 +70,10 @@ import {
   mountTabs,
   useComponent,
   watchComponentMap,
-  mountHeaderTitle
+  mountHeaderTitle,
+  mountSearchQuery,
+  mountSearchReset,
+  mountSearchResult
 } from "components"
 import { setupClipboard } from "./integrations/clipboard"
 import { setupKeyboard } from "./integrations/keyboard"
@@ -80,7 +84,7 @@ import {
   patchSource
 } from "patches"
 import { isConfig } from "utilities"
-import { renderDialog } from "templates/dialog"
+import { setupDialog } from "integrations/dialog"
 
 /* ------------------------------------------------------------------------- */
 
@@ -153,11 +157,34 @@ export function initialize(config: unknown) {
 
   /* ----------------------------------------------------------------------- */
 
+  /* Mount search query */
+  const query$ = useComponent<HTMLInputElement>("search-query")
+    .pipe(
+      mountSearchQuery(worker),
+      shareReplay(1) // TODO: this must be put onto EVERY component!
+    )
+
+  /* Mount search reset */
+  const reset$ = useComponent("search-reset")
+    .pipe(
+      mountSearchReset()
+    )
+
+  /* Mount search result */
+  const result$ = useComponent("search-result")
+    .pipe(
+      mountSearchResult(worker, { query$ })
+    )
+
+  /* ----------------------------------------------------------------------- */
+
   const search$ = useComponent("search")
     .pipe(
-      mountSearch(worker)
+      mountSearch({ query$, reset$, result$ })
     )
 
+  /* ----------------------------------------------------------------------- */
+
   const navigation$ = useComponent("navigation")
     .pipe(
       mountNavigation({ header$, main$, viewport$, screen$ })
@@ -178,7 +205,6 @@ export function initialize(config: unknown) {
       mountHero({ header$, viewport$ })
     )
 
-  // TODO: make this part of mountHeader!?
   const title$ = useComponent("header-title")
     .pipe(
       mountHeaderTitle({ header$, viewport$ })
@@ -196,57 +222,38 @@ export function initialize(config: unknown) {
   if (navigator.userAgent.match(/(iPad|iPhone|iPod)/g))
     patchScrollfix({ document$ })
 
-  // snackbar for copy to clipboard
-  const dialog = renderDialog("Copied to Clipboard")
-  setupClipboard({ document$ })
-    .pipe(
-      switchMap(ev => {
-        ev.clearSelection()
-        return useComponent("container")
-          .pipe(
-            tap(el => el.appendChild(dialog)), // only set text on dialog... render once...
-            observeOn(animationFrameScheduler),
-            tap(() => dialog.dataset.mdState = "open"),
-            delay(2000),
-            tap(() => dialog.dataset.mdState = ""),
-            delay(400),
-            tap(() => dialog.remove())
-          )
-      })
-    )
-      .subscribe()
+  /* Setup clipboard and dialog */
+  const dialog$ = setupDialog()
+  const clipboard$ = setupClipboard({ document$, dialog$ })
 
   /* ----------------------------------------------------------------------- */
 
   // Close drawer and search on hash change
+  // put into navigation...
   hash$.subscribe(x => {
-
     useToggle("drawer").subscribe(el => {
       setToggle(el, false)
     })
   })
 
-  // TODO:
+  // put into search...
   hash$
     .pipe(
-      switchMap(hash => {
-
-        return useToggle("search")
+      switchMap(hash => useToggle("search")
         .pipe(
           filter(x => x.checked), // only active
           tap(toggle => setToggle(toggle, false)),
           delay(125), // ensure that it runs after the body scroll reset...
-            tap(() => {
-              location.hash = " "
-              location.hash = hash
-            }) // encapsulate this...
+          mapTo(hash)
         )
-
+      )
+    )
+      .subscribe(hash => {
+        getElement(hash)!.scrollIntoView()
       })
-    )
-      .subscribe()
 
-  // Scroll lock
+  // Scroll lock // document -> document$ => { body } !?
+  // put into search...
   const toggle$ = useToggle("search")
   combineLatest([
     toggle$.pipe(switchMap(watchToggle)),
@@ -256,13 +263,13 @@ export function initialize(config: unknown) {
       withLatestFrom(viewport$),
       switchMap(([[toggle, tablet], { offset: { y }}]) => {
         const active = toggle && !tablet
-        return of(document.body)
+        return document$
           .pipe(
-            delay(active ? 400 : 100),
+            delay(active ? 400 : 100), // TOOD: directly combine this with the hash!
             observeOn(animationFrameScheduler),
-            tap(el => active
-              ? setScrollLock(el, y)
-              : resetScrollLock(el)
+            tap(({ body }) => active
+              ? setScrollLock(body, y)
+              : resetScrollLock(body)
             )
           )
       })
@@ -283,18 +290,21 @@ export function initialize(config: unknown) {
         link.style.visibility = "visible"
     })
 
-  // build a notification component! feed txt into it...
-
   /* ----------------------------------------------------------------------- */
 
   const state = {
     search$,
+    clipboard$,
+    location$,
+    hash$,
+    keyboard$,
+    dialog$,
     main$,
     navigation$,
     toc$,
     tabs$,
     hero$,
-    title$
+    title$ // TODO: header title
   }
 
   const { ...rest } = state

src/assets/javascripts/integrations/clipboard/index.ts

@@ -21,11 +21,12 @@
  */
 
 import * as ClipboardJS from "clipboard"
-import { NEVER, Observable, fromEventPattern } from "rxjs"
-import { shareReplay } from "rxjs/operators"
+import { NEVER, Observable, Subject, fromEventPattern } from "rxjs"
+import { mapTo, shareReplay, tap } from "rxjs/operators"
 
 import { getElements } from "observables"
 import { renderClipboard } from "templates"
+import { translate } from "utilities"
 
 /* ----------------------------------------------------------------------------
  * Helper types
@@ -36,6 +37,7 @@ import { renderClipboard } from "templates"
  */
 interface SetupOptions {
   document$: Observable<Document>      /* Document observable */
+  dialog$: Subject<string>             /* Dialog subject */
 }
 
 /* ----------------------------------------------------------------------------
@@ -53,7 +55,7 @@ interface SetupOptions {
  * @return Clipboard observable
  */
 export function setupClipboard(
-  { document$ }: SetupOptions
+  { document$, dialog$ }: SetupOptions
 ): Observable<ClipboardJS.Event> {
   if (!ClipboardJS.isSupported())
     return NEVER
@@ -74,9 +76,15 @@ export function setupClipboard(
     new ClipboardJS(".md-clipboard").on("success", next)
   })
 
-  // TODO: integrate rendering of dialog
+  /* Display notification upon clipboard copy */
+  clipboard$
+    .pipe(
+      tap(ev => ev.clearSelection()),
+      mapTo(translate("clipboard.copied"))
+    )
+      .subscribe(dialog$)
 
-  /*  */
+  /* Return clipboard as hot observable */
   return clipboard$
     .pipe(
       shareReplay(1)

src/assets/javascripts/integrations/dialog/index.ts

@@ -20,17 +20,26 @@
  * IN THE SOFTWARE.
  */
 
-import { h } from "utilities"
+import { Subject, animationFrameScheduler } from "rxjs"
+import {
+  delay,
+  map,
+  observeOn,
+  switchMap,
+  tap
+} from "rxjs/operators"
+
+import { useComponent } from "components"
 
 /* ----------------------------------------------------------------------------
- * Data
+ * Types
  * ------------------------------------------------------------------------- */
 
 /**
- * CSS classes
+ * Setup options
  */
-const css = {
-  container: "md-dialog md-typeset"
+interface SetupOptions {
+  duration?: number                    /* Display duration (default: 2s) */
 }
 
 /* ----------------------------------------------------------------------------
@@ -38,18 +47,44 @@ const css = {
  * ------------------------------------------------------------------------- */
 
 /**
- * Render a dismissable dialog
+ * Setup dialog
  *
- * @param text - Dialog text
+ * @param options - Options
  *
- * @return Element
+ * @return Dialog observable
  */
-export function renderDialog(
-  text: string
-): HTMLElement {
-  return (
-    <div class={css.container}>
-      {text}
-    </div>
+export function setupDialog(
+  { duration }: SetupOptions = {}
+): Subject<string> {
+  const dialog$ = new Subject<string>()
+
+  /* Create dialog */
+  const dialog = document.createElement("div")                                  // TODO: improve scoping
+  dialog.classList.add("md-dialog", "md-typeset")
+
+  /* Display dialog */
+  dialog$
+    .pipe(
+      switchMap(text => useComponent("container")
+        .pipe(
+          map(container => container.appendChild(dialog)),
+          delay(1), // Strangley it doesnt work when we push things to the new animation frame...
+          tap(el => {
+            el.innerHTML = text
+            el.setAttribute("data-md-state", "open")
+          }),
+          delay(duration || 2000),
+          tap(el => el.removeAttribute("data-md-state")),
+          delay(400),
+          tap(el => {
+            el.innerHTML = ""
+            el.remove()
+          })
         )
+      )
+    )
+      .subscribe()
+
+  /* Return dialog subject */
+  return dialog$
 }

src/assets/javascripts/integrations/keyboard/index.ts

@@ -198,6 +198,6 @@ export function setupKeyboard(): Observable<Keyboard> {
         }
       })
 
-  /* Return keyboard observable */
+  /* Return keyboard */
   return keyboard$
 }

src/assets/javascripts/observables/agent/location/_/index.ts

@@ -51,6 +51,6 @@ export function watchLocation(): Subject<string> {
     )
       .subscribe(location$)
 
-  /* Return subject */
+  /* Return location subject */
   return location$
 }

src/assets/javascripts/observables/agent/location/hash/index.ts

@@ -21,7 +21,7 @@
  */
 
 import { Observable, fromEvent } from "rxjs"
-import { filter, map, share } from "rxjs/operators"
+import { filter, map, share, startWith } from "rxjs/operators"
 
 /* ----------------------------------------------------------------------------
  * Functions
@@ -36,22 +36,6 @@ export function getLocationHash(): string {
   return location.hash
 }
 
-/**
- * Set location hash
- *
- * This will force a reset of the location hash, inducing an anchor jump if
- * the hash matches the `id` of an element. It is implemented outside of the
- * whole RxJS architecture using `setTimeout` to keep it plain and simple.
- *
- * @param value - Location hash
- */
-export function setLocationHash(value: string): void {
-  location.hash = ""
-  setTimeout(() => {
-    location.hash = value
-  }, 1)
-}
-
 /* ------------------------------------------------------------------------- */
 
 /**
@@ -63,6 +47,7 @@ export function watchLocationHash(): Observable<string> {
   return fromEvent<HashChangeEvent>(window, "hashchange")
     .pipe(
       map(getLocationHash),
+      startWith(getLocationHash()),
       filter(hash => hash.length > 0),
       share()
     )

src/assets/javascripts/observables/agent/viewport/size/index.ts

@@ -20,8 +20,8 @@
  * IN THE SOFTWARE.
  */
 
-import { Observable, combineLatest, fromEvent, merge } from "rxjs"
-import { map, shareReplay, startWith } from "rxjs/operators"
+import { Observable, fromEvent } from "rxjs"
+import { map, startWith } from "rxjs/operators"
 
 /* ----------------------------------------------------------------------------
  * Types

src/assets/javascripts/observables/navigation/layer/index.ts

@@ -99,7 +99,7 @@ export function watchNavigationLayer(
       )))
     )
 
-  /* Return previous and next layer */
+  /* Return previous and next layer as hot observable */
   return layer$
     .pipe(
       map(next => ({ next })),

src/assets/javascripts/patches/details/index.ts

@@ -21,20 +21,17 @@
  */
 
 import { identity } from "ramda"
-import { NEVER, Observable, fromEvent, merge, of } from "rxjs"
+import { Observable, fromEvent, merge } from "rxjs"
 import {
-  catchError,
   filter,
   map,
-  switchMap,
   switchMapTo,
+  tap
 } from "rxjs/operators"
 
 import {
-  getElementOrThrow,
+  getElement,
   getElements,
-  getLocationHash,
-  setLocationHash,
   watchMedia
 } from "observables"
 
@@ -72,8 +69,8 @@ export function patchDetails(
 
   /* Open all details before printing */
   merge(
-    watchMedia("print").pipe(filter(identity)), // Webkit
-    fromEvent(window, "beforeprint")            // IE, FF
+    watchMedia("print").pipe(filter(identity)), /* Webkit */
+    fromEvent(window, "beforeprint")            /* IE, FF */
   )
     .pipe(
       switchMapTo(els$)
@@ -83,20 +80,16 @@ export function patchDetails(
           el.setAttribute("open", "")
       })
 
-  /* Open parent details before anchor jump */
-  merge(hash$, of(getLocationHash()))
+  /* Open parent details and fix anchor jump */
+  hash$
     .pipe(
-      filter(hash => !!hash.length),
-      switchMap(hash => of(getElementOrThrow<HTMLElement>(hash))
-        .pipe(
-          map(el => [el.closest("details")!, hash] as const),
-          filter(([el]) => el && !el.open)
-        )
-      ),
-      catchError(() => NEVER)
-    )
-      .subscribe(([el, hash]) => {
-        el.setAttribute("open", "")
-        setLocationHash(hash)
+      map(hash => getElement(hash)!),
+      filter(el => typeof el !== "undefined"),
+      tap(el => {
+        const details = el.closest("details")
+        if (details && !details.open)
+          details.setAttribute("open", "")
       })
+    )
+      .subscribe(el => el.scrollIntoView())
 }

src/assets/javascripts/patches/scrollfix/index.ts

@@ -58,7 +58,10 @@ export function patchScrollfix(
     .pipe(
       map(() => getElements("[data-md-scrollfix]")),
       switchMap(els => merge(...els.map(el => (
-        fromEvent(el, "touchstart").pipe(mapTo(el))
+        fromEvent(el, "touchstart")
+          .pipe(
+            mapTo(el)
+          )
       ))))
     )
       .subscribe(el => {

src/assets/javascripts/patches/source/github/index.ts

@@ -23,12 +23,7 @@
 import { Repo, User } from "github-types"
 import { Observable, of } from "rxjs"
 import { ajax } from "rxjs/ajax"
-import {
-  filter,
-  pluck,
-  shareReplay,
-  switchMap
-} from "rxjs/operators"
+import { filter, pluck, switchMap } from "rxjs/operators"
 
 import { round } from "utilities"
 
@@ -75,7 +70,6 @@ export function fetchSourceFactsFromGitHub(
             `${round(public_repos || 0)} Repositories`
           ])
         }
-      }),
-      shareReplay(1)
+      })
     )
 }

src/assets/javascripts/patches/source/gitlab/index.ts

@@ -23,12 +23,7 @@
 import { ProjectSchema } from "gitlab"
 import { Observable } from "rxjs"
 import { ajax } from "rxjs/ajax"
-import {
-  filter,
-  map,
-  pluck,
-  shareReplay
-} from "rxjs/operators"
+import { filter, map, pluck } from "rxjs/operators"
 
 import { round } from "utilities"
 
@@ -59,7 +54,6 @@ export function fetchSourceFactsFromGitLab(
       map(({ star_count, forks_count }: ProjectSchema) => ([
         `${round(star_count)} Stars`,
         `${round(forks_count)} Forks`
-      ])),
-      shareReplay(1)
+      ]))
     )
 }

src/assets/javascripts/patches/table/index.ts

@@ -52,15 +52,15 @@ interface MountOptions {
 export function patchTables(
   { document$ }: MountOptions
 ): void {
-  const placeholder = document.createElement("table")
+  const sentinel = document.createElement("table")
   document$
     .pipe(
       map(() => getElements<HTMLTableElement>("table:not([class])"))
     )
       .subscribe(els => {
         for (const el of els) {
-          el.replaceWith(placeholder)
-          placeholder.replaceWith(renderTable(el))
+          el.replaceWith(sentinel)
+          sentinel.replaceWith(renderTable(el))
         }
       })
 }

src/assets/javascripts/templates/index.ts

@@ -21,7 +21,6 @@
  */
 
 export * from "./clipboard"
-export * from "./dialog"
 export * from "./search"
 export * from "./source"
 export * from "./table"

src/assets/javascripts/templates/source/index.tsx

@@ -20,7 +20,7 @@
  * IN THE SOFTWARE.
  */
 
-import { SourceFacts } from "integrations/source"
+import { SourceFacts } from "patches/source"
 import { h } from "utilities"
 
 /* ----------------------------------------------------------------------------
@@ -49,7 +49,9 @@ const css = {
 export function renderSource(
   facts: SourceFacts
 ): HTMLElement {
-  const children = facts.map(fact => <li class={css.fact}>{fact}</li>)
+  const children = facts.map(fact => (
+    <li class={css.fact}>{fact}</li>
+  ))
   return (
     <ul class={css.facts}>
       {children}

src/assets/javascripts/utilities/rxjs/index.ts

@@ -61,7 +61,7 @@ export function cache<T>(
           }
         })
 
-      /* Return value observable */
+      /* Return value */
       return value$
     }
   })

src/assets/javascripts/utilities/string/index.ts

@@ -81,14 +81,13 @@ export function truncate(value: string, n: number): string {
 /**
  * Round a number for display with source facts
  *
- * This is a reverse engineered implementation of GitHub's weird rounding
- * algorithm for stars, forks and all other numbers. While all numbers below
- * `1,000` are returned as-is, bigger numbers are converted to fixed numbers
- * in the following way:
+ * This is a reverse engineered version of GitHub's weird rounding algorithm
+ * for stars, forks and all other numbers. While all numbers below `1,000` are
+ * returned as-is, bigger numbers are converted to fixed numbers:
  *
  * - `1,049` => `1k`
- * - `1,050` => `1,1k`
- * - `1,949` => `1,9k`
+ * - `1,050` => `1.1k`
+ * - `1,949` => `1.9k`
  * - `1,950` => `2k`
  *
  * @param value - Original value